Siddharth Wagle created AMBARI-14882:
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Summary: AMS aggregates Counter values as average over the
timeseries (and other issues)
Key: AMBARI-14882
URL: https://issues.apache.org/jira/browse/AMBARI-14882
Project: Ambari
Issue Type: Task
Components: ambari-metrics
Affects Versions: 2.0.0
Reporter: Siddharth Wagle
Assignee: Siddharth Wagle
Priority: Critical
Fix For: 2.2.2
Current behavior:
We store the difference between two points if the metric is a counter without
dividing by the time difference (Assumes fixed sampling frequency, 10 seconds
for Hadoop daemons). This is similar to the Ganglia sink implementation.
Expected behavior:
- Store raw data with type = COUNTER and provide aggregate function called
._rate to calculate rate on demand.
- We need to make sure type attribute on the METRIC_RECORD data capture COUNTER
/ GAUGE. The HadoopMetricsSink needs to change to send this value.
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